Attachment for pencils.



M. A. GRYNK. ATTACHMENT FOR PENCILS. APPucAnoNHLED MAY s. 191s.

Patented Apr. 24, 1917.

"l onirica MICHAEL A. GRYNIK, or LADYwoon, MANrroBA, CANADA.

ATTACHMENT FOR PENCILS.

Specication of Letters Patent.

Patented Apr. 24, 1917.

Application :filed May 6, 1916. Serial N0. 95,901.

To all 'whom zt may concern:

Be it known that l, MICHAEL A. GRYNIK, a subject of the King of Great Britain, residing at Ladywood, in the Province of Manitoba, Dominion of Canada, have invented certain new and useful Improvements'in Attachments for Pencils, of Vwhich the following is a speciiication.

My invention relates to new and useful improvements in attachments for pencils, the primary object ot my invention being the provision of a simple device which may be detachably connected to any ordinary type of pencil ,and which provides a combined pencil Sharpener and point protector.

A still further object of my invention conf sists in providing a pencil attachment inthe form of a metallic sleeve or ferrule, one end of which is adapted to alternately receive `Yither the pointed or unsharpened end of a pencil, according to whether the device is to serve as an eraser holder, while the pencil is in use, or as a point protector when the pencil is not in use, an inner ferrule being provided to limit the extent to which the end of the pencil may be inserted within the outer ferrule under either circumstance.

A still further object of my invention consists in constructing the inner ferrule in.

such a manner that it is not only separable from the pencil, but also from the outer ferrule and in mounting a pencil sharpening device within the outer ferrule into which the pencil point may be projected ior sharpening purposes if the inner ferrule is removed from theremainder of the device.

With these and other objects in view, such as an improved means of anchoring the pencil sharpening device within the outer ferrule, my invention will be more fully described, illustrated in the accompanying drawings, and then specifically pointed out in the claims which are attached to and form a part of this application.

In the drawings:

Figure 1 is a fragmentary elevational view of a conventional form of pencil, show-A ing my attachment in use as a point protector;

Fig. 2 is a corresponding View, showing my invention in central longitudinal section;

Fig. 3 is a transverse sectional vlew taken on the line 3-3 of Fig. 2, illustrating certain details in the manner of supporting the eraser in the outer ferrule;

Fig. is a corresponding sectional view, illustratlng certain details in the constructionotl the pencil sharpening device;

Fig. 5 1s a plan view of the blank from whlch the pencil sharpening device is .formed Fig. 6 is a perspective view of the inner ferrule removed from the remainder of the device.

Corresponding and like parts are referred to 1n the following description and indicated in all the views of the drawings by the same reference characters.

In order to insure a clear and accurate understanding of myinvention I have illustrated my improved attachment, indicated as a whole by the numeral 10, as applied to the pointed or sharpened end 11 of a conventional form of pencil 12. The main body of my attachment is constructed in the form of a cylindrical sleeve or ferrule 13 of sheet metal or other suitable material open at its ends. This ferrule, adjacent one end, is pressed inwardly to provide internal threads or shoulders 14 and a cylindrical eraser 15 is seated in such end. A U-shaped eraser supporting member 16 projects into the threaded end of the ferrule, the eraser seating between the sides of such member and at its inner end engaging against the intermediate portion of the member. The outer ends of the supporting member 16 are bent about the end of the ferrule, as shown at 17, to limit the extent to which the supporting member 16 may be passed into the fel-rule. Obviously, the eraser, if made in such diameter as to it snugly within the ferrule, will engage in the grooves or threads 14 and, consequently, if rotated in the proper direction will move outwardly. Furthermore, inasmuch as the eraser will be wedged between the side portions of the supporting member 16, it will be apparent that such member will travel outwardly with it and that the turned over ends of such member may be utilized as a means for assisting in Y rotating the eraser to project the latter. When the eraser has been projected to the proper eXtent, 4the supporting member 16 may be pushed back into place.

The ferrule, immediately adjacent the threaded portion, is formed with an instruck annular bead 18 and inv spaced relation to this bead with a. second instruck annular bead 19 defining an intermediate los " from each other.

body portion which incloses the pencilK sharpening device,

this plate, after being stamped out, being bent into frusto-conical shape with its abutting or diagonal edges spaced slightly One of these edges is beveled to provide a cutting edge 22 and is inbent somewhat in order that the cutting 'edge may engage the end of a pencil inserted within the larger end of the cone. As clearly shown in Figs. 1 and 2 of the drawings, this pencil sharpening device is inserted in the intermediate portion of the ferrule 13, being equal in length to the distance between the beads 18 and 19 and is anchored in position by pouring melted lead between ity and the peripheral wall of the ferrule to Jform an anchoring plug 23, the ends of which engage the beads or shoulders 18 and 19, it being of course understood that this lead may be poured into the eraser receiving 1end of the ferrule previous to the application of the eraser and its holder. To hold boththis anchoring plug and the pencil sharpening device against rotation within the ferrule 13, the blank 21 forming theanchoring device is punched to provide outward pro]ections 24 and the wall of the ferrule is correspondingly punched tb provide inward projections 25, these projections, of course, seating in the plug 23 to firmly anchor all parts against independent movement. As shown in Fig. 1, the intermediate portion of the ferrule13 is formed with a longitudinal slot or opening'26 in alinement with the spaced edges of the' pencilI sharpening device inorder that shavings and graphite removed from the pencil vduring its' sharpening may escape from the ferrule.

This outer ferrule 13 is somewhat larger in diameter than the diameter of the pencil which it is to receive'and I provide an inner ferrule 27, shown in Figs. 2l and 6 of the drawings. This inner ferrule is preferably of slightly less internal diameter than the external diameter of the pencil which it is to receive and is formed of resilient metal and provided with a longitudinal slot 28 extending from its outer end throughout nearly the entire length of the errule and terminatin in an enlargement 29 at its inner end whic permits free expansion and contraction of the inner ferrule. The outer end of the ferrule 27 is dared outwardly to provide a stop shoulder 30 which will engage against the end of the outer ferrule when the inner ferrule is positioned therein tolimit inward movement of the ferrule 27 and the ferrule 27, at its inner end, has its edge inbent to form a contracted or restricted opening 31.

From the foregoing description, taken in connection with the drawings, the operation of my improved pencil attachment will be readily understood. When the device lis utilized as a pencil point protector, the inner ferrule 27 is positioned within the outer ferrule, as shown in Fig. 2 and the pointed end of the encil force into the inner ferrule until urther movement is checked by the engagement of the tapered end of thepencil with the inturned edge of the inner errule. Because of this, the pencil point is held against engagement'with the pencil sharpening device and any likelihood of`v injury thereto is, therefore, avoided.

When the pencil is inl use, the attachment, with the inner ferrulestill ositioned within the outer errule is applic to the unsharpened end of the pencil. Obviously, the eraser 15 is, at all times, exposed and may be used in the ordinary manner. As this eraser Y becomes worn it may be further (projected from the ferrule 13, as previously escribed. When the device is employed as a pencil Sharpener, the inner errule 27 is removed both romthe pencil and from the outer errule and the pointed .end of the pencil 1nserted into the outer ferrule and into active engagement with the pencil sharpening device 20. When so engaged, the pencil may be sharpened by turning the pencil in the proper direction with respect to the errule or by turning the ferrule in the opposite direction while holding the pencil.

From the foregoing descrl tion it will be apparent that I have provi ed a very useul attachment for pencils which serves as an` adjustable eraser holder, a pencil sharpener and a pencil `point protector. Furthermore, inasmuch as the device is always mounted upon the pencil, 7it is less liable to be lost than the ordinary erasers, ,pencil Sharpeners and point'protectors which, in manyvinstances, are in engagement with the pencil only when in actual use.

Having thus described the invention, what is claimed as new is:

1. An attachment for pencils including a ferrule provided intermediate its length with vice mounted in the ferrule in position to discharge shavings through the slot when the attachment is utilized as a pencil Sharpener, and means in the ferrule for normally holding the end of a pencil inserted therein in spaced relation to the pencil sharpening device, said means including a second ferrule adapted to receive either the sharpened or unsharpened end of a pencil and seating Within the end of the first ferrule, the second ferrule, at its outer end, having a stop flange rst ferrule and, at

engaging the end of the projection adapted lts inner end, an inward to engage a pencil.

`3. An attachment for pencils including a ferrule provided intermediate its length with a longitudinal slot, the ferrule about the slotted portion being formed with instruck projections, a frusto-conical pencil sharpening member having an inturned cutting edge and having outwardly punched projections seating within the intermediate portion of the ferrule in position to discharge shavings through the slot thereof, and an anchoring plug formed from molten metal poured be# tween the sharpening member and intermediate portion of the ferrule and embedding the projections of both to anchor the sharpening member against turning movement independent of the ferrule.

In testimon whereof I affix m signature.

MICI-{AEL A. GRYNIIg. [L. s.] 

